/* =========================================================
   GLOBAL
========================================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background:
        radial-gradient(circle at 15% 20%, rgba(255, 0, 0, 0.08), transparent 30%),
        radial-gradient(circle at 85% 80%, rgba(56, 239, 125, 0.06), transparent 30%),
        #090909;

    color: #ffffff;
    min-height: 100vh;
    overflow-x: hidden;
}


/* =========================================================
   ANIMATED GLOW FRAME
========================================================= */

@keyframes borderGlow {
    0% {
        border-color: #ff0000;
        box-shadow: 0 0 12px rgba(255, 0, 0, 0.25);
    }

    33% {
        border-color: #38ef7d;
        box-shadow: 0 0 12px rgba(56, 239, 125, 0.20);
    }

    66% {
        border-color: #f3ba2f;
        box-shadow: 0 0 12px rgba(243, 186, 47, 0.20);
    }

    100% {
        border-color: #ff0000;
        box-shadow: 0 0 12px rgba(255, 0, 0, 0.25);
    }
}

.animated-box-frame {
    border: 1px solid #333;
    animation: borderGlow 6s infinite linear;
}


/* =========================================================
   LOGIN SCREEN
========================================================= */

.login-wrapper {
    width: 100%;
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    padding: 30px;
}


/* =========================================================
   MAIN LOGIN CARD
========================================================= */

.login-main-card {
    width: 100%;
    max-width: 1100px;
    min-height: 650px;

    display: grid;
    grid-template-columns: 1.05fr 0.95fr;

    background: rgba(20, 20, 20, 0.96);

    border: 1px solid #333;
    border-radius: 28px;

    overflow: hidden;

    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.75),
        0 0 50px rgba(255, 0, 0, 0.06);

    position: relative;
}


/* =========================================================
   LEFT BRANDING SECTION
========================================================= */

.login-brand-section {
    position: relative;

    min-height: 650px;

    display: flex;
    flex-direction: column;

    justify-content: center;
    align-items: center;

    text-align: center;

    padding: 45px;

    overflow: hidden;

    background:
        linear-gradient(
            145deg,
            rgba(255, 0, 0, 0.14),
            rgba(0, 0, 0, 0.2) 45%,
            rgba(56, 239, 125, 0.06)
        );
}


/* Background decorative circles */

.login-brand-section::before {
    content: "";

    position: absolute;

    width: 380px;
    height: 380px;

    border-radius: 50%;

    border: 1px solid rgba(255, 0, 0, 0.15);

    top: -150px;
    left: -150px;
}

.login-brand-section::after {
    content: "";

    position: absolute;

    width: 300px;
    height: 300px;

    border-radius: 50%;

    border: 1px solid rgba(56, 239, 125, 0.12);

    bottom: -120px;
    right: -100px;
}


/* =========================================================
   TEACHER PHOTO
========================================================= */

.brand-photo-wrapper {
    position: relative;
    z-index: 2;

    width: 240px;
    height: 240px;

    border-radius: 50%;

    padding: 7px;

    background: linear-gradient(
        135deg,
        #ff0000,
        #f3ba2f,
        #38ef7d,
        #ff0000
    );

    box-shadow:
        0 0 35px rgba(255, 0, 0, 0.25),
        0 0 70px rgba(255, 0, 0, 0.08);

    animation: photoGlow 5s infinite linear;
}

@keyframes photoGlow {
    0% {
        filter: drop-shadow(0 0 5px rgba(255, 0, 0, 0.3));
    }

    50% {
        filter: drop-shadow(0 0 15px rgba(56, 239, 125, 0.25));
    }

    100% {
        filter: drop-shadow(0 0 5px rgba(255, 0, 0, 0.3));
    }
}

.brand-teacher-photo {
    width: 100%;
    height: 100%;

    border-radius: 50%;

    object-fit: cover;

    display: block;

    background: #111;

    border: 5px solid #101010;
}


/* =========================================================
   BRAND TEXT
========================================================= */

.brand-text {
    position: relative;
    z-index: 2;

    margin-top: 28px;
}


.small-brand-title {
    color: #aaa;

    font-size: 0.75rem;

    letter-spacing: 4px;

    font-weight: 700;

    margin-bottom: 10px;
}


.brand-text h1 {
    font-size: clamp(2.1rem, 4vw, 3.5rem);

    font-weight: 900;

    letter-spacing: 1px;

    line-height: 1;

    text-transform: uppercase;
}

.brand-text h1 span {
    color: #ff0000;

    display: inline-block;
}


.brand-text h2 {
    margin-top: 14px;

    font-size: clamp(1.2rem, 2.5vw, 1.8rem);

    font-weight: 800;

    letter-spacing: 2px;

    color: #ffffff;
}


.brand-divider {
    width: 80px;
    height: 3px;

    margin: 18px auto;

    border-radius: 10px;

    background: linear-gradient(
        90deg,
        #ff0000,
        #f3ba2f,
        #38ef7d
    );
}


.brand-text p {
    color: #ddd;

    font-size: 1rem;

    font-weight: 600;

    letter-spacing: 2px;
}


.brand-text .institute-name {
    color: #ff5252;

    margin-top: 7px;

    font-size: 0.9rem;

    font-weight: 700;

    letter-spacing: 1.5px;
}


/* =========================================================
   CLASS BADGE
========================================================= */

.class-badge {
    display: inline-flex;

    align-items: center;
    justify-content: center;

    gap: 8px;

    margin-top: 20px;

    padding: 9px 16px;

    border-radius: 30px;

    background: rgba(255, 255, 255, 0.05);

    border: 1px solid #333;

    color: #aaa;

    font-size: 0.75rem;

    font-weight: 700;

    letter-spacing: 0.8px;
}

.class-badge i {
    color: #38ef7d;
}


/* =========================================================
   RIGHT LOGIN SECTION
========================================================= */

.login-form-section {
    min-height: 650px;

    display: flex;
    flex-direction: column;

    justify-content: center;

    padding: 55px 55px;

    background: #111;

    border-left: 1px solid #292929;
}


/* =========================================================
   LOGIN HEADER
========================================================= */

.login-header {
    text-align: center;

    margin-bottom: 28px;
}


.login-icon {
    width: 58px;
    height: 58px;

    display: flex;
    justify-content: center;
    align-items: center;

    margin: 0 auto 15px;

    border-radius: 50%;

    background: rgba(255, 0, 0, 0.10);

    border: 1px solid rgba(255, 0, 0, 0.35);

    color: #ff0000;

    font-size: 1.4rem;
}


.login-header h2 {
    font-size: 1.8rem;

    margin-bottom: 7px;
}


.login-header p {
    color: #888;

    font-size: 0.9rem;
}


/* =========================================================
   NORMAL LOGIN FORM
========================================================= */

.normal-login-form {
    width: 100%;
}


.normal-login-form label {
    display: block;

    color: #bbb;

    font-size: 0.82rem;

    font-weight: 600;

    margin-bottom: 7px;

    margin-top: 14px;
}


.normal-login-form label i {
    color: #ff0000;

    margin-right: 5px;
}


/* =========================================================
   INPUT WRAPPER
========================================================= */

.input-wrapper {
    position: relative;

    width: 100%;
}


.input-wrapper > i {
    position: absolute;

    left: 15px;

    top: 50%;

    transform: translateY(-50%);

    color: #777;

    font-size: 0.9rem;
}


.input-wrapper input {
    width: 100%;

    height: 48px;

    padding: 0 45px 0 43px;

    border-radius: 10px;

    border: 1px solid #333;

    background: #181818;

    color: #fff;

    outline: none;

    font-size: 0.9rem;

    transition: 0.25s;
}


.input-wrapper input::placeholder {
    color: #666;
}


.input-wrapper input:focus {
    border-color: #ff0000;

    box-shadow:
        0 0 0 3px rgba(255, 0, 0, 0.08);
}


/* =========================================================
   PASSWORD TOGGLE
========================================================= */

.password-toggle {
    position: absolute;

    right: 10px;

    top: 50%;

    transform: translateY(-50%);

    width: 34px;
    height: 34px;

    display: flex;
    align-items: center;
    justify-content: center;

    background: transparent;

    border: none;

    color: #777;

    cursor: pointer;

    border-radius: 50%;
}

.password-toggle:hover {
    color: #fff;

    background: #292929;
}


/* =========================================================
   MAIN LOGIN BUTTON
========================================================= */

.main-login-btn {
    width: 100%;

    height: 48px;

    margin-top: 20px;

    border: none;

    border-radius: 10px;

    background: linear-gradient(
        135deg,
        #ff0000,
        #d90000
    );

    color: #fff;

    font-size: 0.95rem;

    font-weight: 800;

    cursor: pointer;

    display: flex;

    justify-content: center;
    align-items: center;

    gap: 9px;

    box-shadow:
        0 7px 20px rgba(255, 0, 0, 0.18);

    transition: 0.25s;
}


.main-login-btn:hover {
    transform: translateY(-2px);

    filter: brightness(1.08);

    box-shadow:
        0 10px 25px rgba(255, 0, 0, 0.25);
}


.main-login-btn:active {
    transform: translateY(0);
}


/* =========================================================
   LOGIN DIVIDER
========================================================= */

.login-divider {
    width: 100%;

    display: flex;

    align-items: center;

    gap: 12px;

    margin: 25px 0 18px;

    color: #555;

    font-size: 0.68rem;

    font-weight: 700;

    letter-spacing: 1px;
}


.login-divider::before,
.login-divider::after {
    content: "";

    height: 1px;

    flex: 1;

    background: #2b2b2b;
}


.login-divider span {
    white-space: nowrap;
}


/* =========================================================
   SOCIAL LOGIN BUTTONS
========================================================= */

.social-login-btn {
    width: 100%;

    height: 46px;

    border-radius: 10px;

    margin-bottom: 10px;

    border: 1px solid #333;

    cursor: pointer;

    display: flex;

    justify-content: center;

    align-items: center;

    gap: 10px;

    font-size: 0.88rem;

    font-weight: 700;

    transition: 0.25s;
}


.social-login-btn:hover {
    transform: translateY(-2px);

    filter: brightness(1.08);
}


.google-login {
    background: #ffffff;

    color: #222;

    border-color: #fff;
}


.google-login i {
    color: #ea4335;

    font-size: 1rem;
}


.facebook-login {
    background: #1877f2;

    color: #fff;

    border-color: #1877f2;
}


.facebook-login i {
    font-size: 1rem;
}


.email-login {
    background: #1d1d1d;

    color: #fff;

    border-color: #444;
}


.email-login i {
    color: #ff0000;
}


/* =========================================================
   LOGIN FOOTER
========================================================= */

.login-footer {
    text-align: center;

    margin-top: 18px;

    color: #555;

    font-size: 0.7rem;

    line-height: 1.8;
}


.login-footer p:first-child {
    color: #777;
}


.login-footer i {
    color: #38ef7d;

    margin-right: 4px;
}


/* =========================================================
   MODAL
========================================================= */

.modal {
    display: none;

    position: fixed;

    inset: 0;

    width: 100%;
    height: 100%;

    background: rgba(0, 0, 0, 0.88);

    justify-content: center;
    align-items: center;

    z-index: 3000;

    padding: 20px;

    backdrop-filter: blur(5px);
}


.modal-content {
    background: #181818;

    padding: 28px;

    border-radius: 16px;

    width: 100%;

    max-width: 420px;

    border: 1px solid #333;

    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.7);
}


.modal-icon {
    width: 55px;
    height: 55px;

    border-radius: 50%;

    display: flex;
    align-items: center;
    justify-content: center;

    margin: 0 auto 15px;

    background: rgba(255, 0, 0, 0.1);

    color: #ff0000;

    font-size: 1.4rem;
}


.modal-content h3 {
    text-align: center;

    margin-bottom: 10px;

    color: #fff;
}


.modal-content p {
    text-align: center;

    font-size: 0.85rem;

    color: #aaa;

    margin-bottom: 18px;

    line-height: 1.5;
}


.modal-content input,
.modal-content textarea,
.modal-content select {
    width: 100%;

    padding: 13px;

    margin-bottom: 15px;

    border-radius: 8px;

    border: 1px solid #444;

    background: #0e0e0e;

    color: #fff;

    font-size: 0.95rem;

    outline: none;
}


.modal-content input:focus,
.modal-content textarea:focus,
.modal-content select:focus {
    border-color: #ff0000;
}


.modal-buttons {
    display: flex;

    justify-content: flex-end;

    gap: 10px;
}


.btn-submit {
    background: #ff0000;

    color: #fff;

    padding: 11px 20px;

    border: none;

    border-radius: 8px;

    cursor: pointer;

    font-weight: bold;

    transition: 0.2s;
}


.btn-submit:hover {
    filter: brightness(1.1);

    transform: translateY(-1px);
}


.btn-cancel {
    background: #333;

    color: #fff;

    padding: 11px 20px;

    border: none;

    border-radius: 8px;

    cursor: pointer;

    transition: 0.2s;
}


.btn-cancel:hover {
    background: #444;
}


/* =========================================================
   MAIN APP
========================================================= */

.app-wrapper {
    display: none;

    width: 100%;

    max-width: 800px;

    padding: 20px;

    flex-direction: column;

    align-items: center;

    position: relative;
}


/* =========================================================
   TOP NAVBAR
========================================================= */

.top-navbar {
    width: 100%;

    display: flex;

    justify-content: space-between;

    align-items: center;

    background: #181818;

    padding: 12px 20px;

    border-radius: 30px;

    margin-bottom: 25px;

    border: 1px solid #333;
}


.user-badge {
    display: flex;

    align-items: center;

    gap: 10px;

    font-size: 0.9rem;

    min-width: 0;
}


.user-badge span {
    overflow: hidden;

    text-overflow: ellipsis;

    white-space: nowrap;
}


.user-badge i {
    color: #ff0000;
}


.badge-role {
    background: #333;

    color: #aaa;

    padding: 3px 8px;

    border-radius: 10px;

    font-size: 0.75rem;

    margin-left: 5px;

    flex-shrink: 0;
}


.badge-role.admin {
    background: #ff0000;

    color: #fff;
}


.nav-right-actions {
    display: flex;

    align-items: center;

    gap: 15px;
}


.menu-hamburger-btn {
    background: none;

    border: none;

    color: #fff;

    font-size: 1.5rem;

    cursor: pointer;

    transition: color 0.2s;
}


.menu-hamburger-btn:hover {
    color: #ff0000;
}


/* =========================================================
   SIDE MENU
========================================================= */

.side-menu-overlay {
    position: fixed;

    inset: 0;

    width: 100vw;
    height: 100vh;

    background: rgba(0, 0, 0, 0.7);

    z-index: 2500;

    display: none;
}


.side-menu-drawer {
    position: fixed;

    top: 0;

    right: -300px;

    width: 280px;

    height: 100vh;

    background: #141414;

    border-left: 1px solid #2a2a2a;

    z-index: 2600;

    transition: right 0.3s ease;

    padding: 25px 20px;

    display: flex;

    flex-direction: column;
}


.side-menu-drawer.open {
    right: 0;
}


.drawer-header {
    display: flex;

    justify-content: space-between;

    align-items: center;

    padding-bottom: 20px;

    border-bottom: 1px solid #252525;

    margin-bottom: 20px;
}


.drawer-header h3 {
    font-size: 1.2rem;

    color: #fff;
}


.close-drawer-btn {
    background: none;

    border: none;

    color: #888;

    font-size: 1.4rem;

    cursor: pointer;
}


.close-drawer-btn:hover {
    color: #fff;
}


.drawer-nav-list {
    list-style: none;

    display: flex;

    flex-direction: column;

    gap: 10px;
}


.drawer-nav-item button {
    width: 100%;

    background: none;

    border: none;

    color: #ccc;

    padding: 12px 15px;

    border-radius: 10px;

    text-align: left;

    font-size: 1rem;

    font-weight: 600;

    cursor: pointer;

    display: flex;

    align-items: center;

    gap: 12px;

    transition: all 0.2s ease;
}


.drawer-nav-item button i {
    width: 20px;

    color: #ff0000;
}


.drawer-nav-item button:hover,
.drawer-nav-item button.active {
    background: #222;

    color: #fff;
}


/* =========================================================
   PAGE VIEWS
========================================================= */

.page-view {
    display: none;

    width: 100%;
}


.page-view.active-view {
    display: block;
}


/* =========================================================
   HOME HEADER
========================================================= */

header {
    text-align: center;

    margin-bottom: 25px;
}


.profile-img {
    width: 100px;
    height: 100px;

    border-radius: 50%;

    border: 3px solid #ff0000;

    object-fit: cover;

    margin-bottom: 12px;
}


header h1 {
    font-size: 1.7rem;

    line-height: 1.3;

    margin-bottom: 8px;
}


header h1 span {
    color: #ff0000;
}


/* =========================================================
   MAIN TABS
========================================================= */

.main-tabs-container {
    width: 100%;

    display: flex;

    justify-content: center;

    gap: 15px;

    margin-bottom: 25px;

    border-bottom: 2px solid #222;

    padding-bottom: 15px;
}


.main-tab-btn {
    background: #1e1e1e;

    color: #aaa;

    padding: 12px 24px;

    border-radius: 25px;

    border: 1px solid #333;

    cursor: pointer;

    font-weight: bold;

    font-size: 1rem;

    transition: all 0.3s ease;

    display: flex;

    align-items: center;

    gap: 8px;
}


.main-tab-btn.active,
.main-tab-btn:hover {
    background: #ff0000;

    color: #fff;

    border-color: #ff0000;
}


/* =========================================================
   PLAYLIST SUB TABS
========================================================= */

.sub-tabs-container {
    width: 100%;

    margin-bottom: 25px;

    overflow-x: auto;

    white-space: nowrap;

    padding-bottom: 8px;

    display: none;
}


.sub-tab-btn {
    display: inline-block;

    background: #222;

    color: #ccc;

    padding: 8px 16px;

    margin-right: 8px;

    border-radius: 18px;

    border: 1px solid #333;

    cursor: pointer;

    font-size: 0.9rem;

    font-weight: 600;
}


.sub-tab-btn.active {
    background: #fff;

    color: #000;
}


/* =========================================================
   PLAYLIST GRID
========================================================= */

.playlist-grid {
    display: grid;

    grid-template-columns:
        repeat(auto-fill, minmax(240px, 1fr));

    gap: 20px;

    width: 100%;
}


.playlist-card {
    background: #1a1a1a;

    border-radius: 12px;

    padding: 20px;

    cursor: pointer;

    display: flex;

    flex-direction: column;

    align-items: center;

    text-align: center;

    border: 1px solid #292929;

    transition: 0.25s;
}


.playlist-card:hover {
    transform: translateY(-4px);

    border-color: #ff0000;

    background: #202020;
}


.playlist-card i {
    font-size: 40px;

    color: #ff0000;

    margin-bottom: 12px;
}


/* =========================================================
   VIDEO
========================================================= */

.video-container {
    background: #1f1f1f;

    border-radius: 12px;

    overflow: hidden;

    box-shadow:
        0 10px 30px rgba(0, 0, 0, 0.5);

    margin-bottom: 30px;
}


.video-wrapper {
    position: relative;

    padding-bottom: 56.25%;

    height: 0;

    overflow: hidden;

    background: #000;
}


.video-wrapper iframe {
    position: absolute;

    top: 0;
    left: 0;

    width: 100%;
    height: 100%;

    border: 0;
}


.video-details {
    padding: 20px;
}


.video-title {
    font-size: 1.3rem;

    font-weight: bold;

    margin-bottom: 10px;
}


.video-description {
    color: #ccc;

    font-size: 0.95rem;

    line-height: 1.6;

    background: #2a2a2a;

    padding: 12px;

    border-radius: 8px;

    border-left: 4px solid #ff0000;

    margin-bottom: 15px;

    white-space: pre-wrap;

    max-height: 140px;

    overflow-y: auto;
}


.yt-btn {
    display: inline-flex;

    align-items: center;

    gap: 8px;

    background: #ff0000;

    color: #fff;

    padding: 8px 18px;

    text-decoration: none;

    font-weight: bold;

    border-radius: 20px;

    font-size: 0.9rem;
}


/* =========================================================
   ACCOUNT
========================================================= */

.earn-container {
    background: #181818;

    border-radius: 16px;

    padding: 25px;

    width: 100%;

    border: 1px solid #292929;
}


/* =========================================================
   ADMIN FLOATING BUTTON
========================================================= */

.fab-container {
    position: fixed;

    bottom: 30px;

    right: 30px;

    display: none;

    flex-direction: column-reverse;

    align-items: flex-end;

    gap: 12px;

    z-index: 2000;
}


.fab-main {
    width: 60px;
    height: 60px;

    background: #ff0000;

    color: #fff;

    border-radius: 50%;

    display: flex;

    justify-content: center;

    align-items: center;

    font-size: 26px;

    box-shadow:
        0 4px 15px rgba(255, 0, 0, 0.5);

    cursor: pointer;

    border: none;

    transition: transform 0.3s ease;
}


.fab-container.active .fab-main {
    transform: rotate(45deg);

    background: #444;
}


.fab-options {
    display: none;

    flex-direction: column;

    gap: 10px;

    align-items: flex-end;
}


.fab-container.active .fab-options {
    display: flex;
}


.fab-option-btn {
    display: flex;

    align-items: center;

    gap: 10px;

    background: #222;

    color: #fff;

    padding: 10px 16px;

    border-radius: 25px;

    border: 1px solid #444;

    cursor: pointer;

    font-weight: 600;

    white-space: nowrap;
}


.fab-option-btn i {
    color: #ff0000;
}


/* =========================================================
   RESPONSIVE - TABLET
========================================================= */

@media (max-width: 850px) {

    .login-main-card {
        grid-template-columns: 1fr;

        max-width: 600px;

        min-height: auto;
    }

    .login-brand-section {
        min-height: auto;

        padding: 45px 30px 35px;
    }

    .login-form-section {
        min-height: auto;

        padding: 40px 35px 45px;

        border-left: none;

        border-top: 1px solid #292929;
    }

    .brand-photo-wrapper {
        width: 190px;
        height: 190px;
    }
}


/* =========================================================
   RESPONSIVE - MOBILE
========================================================= */

@media (max-width: 600px) {

    .login-wrapper {
        padding: 12px;
    }

    .login-main-card {
        border-radius: 20px;
    }

    .login-brand-section {
        padding: 35px 18px 30px;
    }

    .login-form-section {
        padding: 30px 20px 35px;
    }

    .brand-photo-wrapper {
        width: 155px;
        height: 155px;
    }

    .brand-text {
        margin-top: 20px;
    }

    .brand-text h1 {
        font-size: 2rem;
    }

    .brand-text h2 {
        font-size: 1.05rem;

        letter-spacing: 1px;
    }

    .small-brand-title {
        font-size: 0.65rem;

        letter-spacing: 2.5px;
    }

    .brand-text p {
        font-size: 0.85rem;
    }

    .brand-text .institute-name {
        font-size: 0.75rem;
    }

    .class-badge {
        font-size: 0.65rem;

        padding: 8px 12px;
    }

    .login-header h2 {
        font-size: 1.5rem;
    }

    .main-tabs-container {
        gap: 8px;
    }

    .main-tab-btn {
        padding: 10px 14px;

        font-size: 0.85rem;
    }

    .app-wrapper {
        padding: 12px;
    }

    .top-navbar {
        padding: 10px 14px;
    }

    .user-badge {
        font-size: 0.75rem;

        gap: 6px;
    }

    .badge-role {
        display: none;
    }

    .playlist-grid {
        grid-template-columns: 1fr;
    }

    .fab-container {
        right: 18px;

        bottom: 18px;
    }

    .modal-content {
        padding: 22px;
    }
}


/* =========================================================
   VERY SMALL PHONES
========================================================= */

@media (max-width: 380px) {

    .brand-photo-wrapper {
        width: 135px;
        height: 135px;
    }

    .brand-text h1 {
        font-size: 1.65rem;
    }

    .brand-text h2 {
        font-size: 0.9rem;
    }

    .login-form-section {
        padding: 25px 15px 30px;
    }

    .main-tab-btn {
        padding: 9px 10px;

        font-size: 0.75rem;
    }
}