:root {
    --primary-color: #1a0b5e;
    --secondary-color: #6d5df3;
    --accent-color: #ffd700;
    --accent-light: #ffed8a;
    --accent-alt: #ffaa00;
    --text-color: #ffffff;
    --text-secondary: #e0d9ff;
    --text-muted: #ddd;
    --text-light-muted: #bbb;
    --background-color: #1a0b5e;
    --navbar-bg: rgba(20, 15, 60, 0.85);
    --card-bg: rgba(255, 255, 255, 0.1);
    --card-bg-hover: rgba(255, 215, 0, 0.1);
    --border-color: rgba(255, 215, 0, 0.2);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --soft-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
    --task-item: rgba(255, 255, 255, 0.05);
    --task-item-hover: rgba(255, 215, 0, 0.1);
    --task-list: rgba(255, 255, 255, 0.08);
    --btn-secondary: rgba(255, 255, 255, 0.12);
    --sidebar-psuedo: rgba(255, 215, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), #a45cf2);
    color: var(--text-color);
    transition: background 0.45s ease, color 0.45s ease;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

button,
input,
textarea,
select {
    font: inherit;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

body.default {
    --primary-color: #1a0b5e;
    --secondary-color: #6d5df3;
    --accent-color: #ffd700;
    --accent-light: #ffed8a;
    --accent-alt: #ffaa00;
    --text-color: #ffffff;
    --text-secondary: #e0d9ff;
    --text-muted: #ddd;
    --text-light-muted: #bbb;
    --background-color: #1a0b5e;
    --navbar-bg: rgba(20, 15, 60, 0.85);
    --card-bg: rgba(255, 255, 255, 0.1);
    --card-bg-hover: rgba(255, 215, 0, 0.1);
    --border-color: rgba(255, 215, 0, 0.2);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --task-item: rgba(255, 255, 255, 0.05);
    --task-item-hover: rgba(255, 215, 0, 0.1);
    --task-list: rgba(255, 255, 255, 0.08);
    --btn-secondary: rgba(255, 255, 255, 0.12);
    --sidebar-psuedo: rgba(255, 215, 0, 0.1);
}

body.light-mode {
    --primary-color: #f0f4ff;
    --secondary-color: #e9e4ff;
    --accent-color: #5e3bff;
    --accent-light: #8b6dff;
    --accent-alt: #ffd700;
    --text-color: #1f1f3d;
    --text-secondary: #4a4a6a;
    --text-muted: #6b6b8f;
    --background-color: #f8f9fc;
    --navbar-bg: rgba(255, 255, 255, 0.97);
    --card-bg: #ffffff;
    --card-bg-hover: rgba(255, 217, 0, 0.34);
    --section-bg: #f0f2ff;
    --border-color: rgba(94, 59, 255, 0.12);
    --shadow-color: rgba(94, 59, 255, 0.08);
    --soft-shadow: 0 10px 30px rgba(94, 59, 255, 0.08);
    --task-item: rgba(255, 255, 255, 0.505);
    --task-item-hover: rgba(255, 217, 0, 0.34);
    --task-list: rgba(255, 255, 255, 0.08);
    --btn-secondary: rgba(255, 255, 255, 0.12);
    --sidebar-psuedo: rgba(255, 215, 0, 0.1);
}

body.neongreen-mode {
    --primary-color: #061a12;
    --secondary-color: #0b4f35;
    --accent-color: #39ff88;
    --accent-light: #a7ffc5;
    --accent-alt: #00c853;
    --text-color: #edfff4;
    --text-secondary: #b8e8ca;
    --text-muted: #8fc4a5;
    --background-color: #061a12;
    --navbar-bg: rgba(6, 26, 18, 0.9);
    --card-bg: rgba(57, 255, 136, 0.12);
    --card-bg-hover: rgba(57, 255, 136, 0.16);
    --border-color: rgba(57, 255, 136, 0.3);
    --shadow-color: rgba(0, 0, 0, 0.2);
    --task-item: rgba(57, 255, 136, 0.08);
    --task-item-hover: rgba(57, 255, 136, 0.16);
    --task-list: rgba(57, 255, 136, 0.08);
    --btn-secondary: rgba(57, 255, 136, 0.14);
    --sidebar-psuedo: rgba(57, 255, 136, 0.12);
}

body.midnight-mode {
    --primary-color: #050816;
    --secondary-color: #111b3d;
    --accent-color: #62a8ff;
    --accent-light: #b8d9ff;
    --accent-alt: #7c4dff;
    --text-color: #f1f5ff;
    --text-secondary: #b8c4df;
    --text-muted: #8996b5;
    --background-color: #050816;
    --navbar-bg: rgba(5, 8, 22, 0.92);
    --card-bg: rgba(98, 168, 255, 0.1);
    --card-bg-hover: rgba(98, 168, 255, 0.12);
    --border-color: rgba(98, 168, 255, 0.25);
    --shadow-color: rgba(0, 0, 0, 0.35);
    --task-item: rgba(98, 168, 255, 0.08);
    --task-item-hover: rgba(98, 168, 255, 0.12);
    --task-list: rgba(98, 168, 255, 0.08);
    --btn-secondary: rgba(98, 168, 255, 0.14);
    --sidebar-psuedo: rgba(98, 168, 255, 0.12);
}

body.pinkvalor-mode {
    --primary-color: #2b0925;
    --secondary-color: #79145f;
    --accent-color: #ff4fbd;
    --accent-light: #ffb3e3;
    --accent-alt: #ff7a59;
    --text-color: #fff2fb;
    --text-secondary: #f2bddf;
    --text-muted: #d997c3;
    --background-color: #2b0925;
    --navbar-bg: rgba(43, 9, 37, 0.9);
    --card-bg: rgba(255, 79, 189, 0.12);
    --card-bg-hover: rgba(255, 79, 189, 0.16);
    --border-color: rgba(255, 79, 189, 0.3);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --task-item: rgba(255, 79, 189, 0.08);
    --task-item-hover: rgba(255, 79, 189, 0.16);
    --task-list: rgba(255, 79, 189, 0.08);
    --btn-secondary: rgba(255, 79, 189, 0.14);
    --sidebar-psuedo: rgba(255, 79, 189, 0.12);
}

body.goldendawn-mode {
    --primary-color: #3d2208;
    --secondary-color: #9a5c14;
    --accent-color: #ffd166;
    --accent-light: #fff0ad;
    --accent-alt: #f4a261;
    --text-color: #fff8e7;
    --text-secondary: #f2dca8;
    --text-muted: #d2b87d;
    --background-color: #3d2208;
    --navbar-bg: rgba(61, 34, 8, 0.9);
    --card-bg: rgba(255, 209, 102, 0.13);
    --card-bg-hover: rgba(255, 209, 102, 0.16);
    --border-color: rgba(255, 209, 102, 0.3);
    --shadow-color: rgba(0, 0, 0, 0.28);
    --task-item: rgba(255, 209, 102, 0.08);
    --task-item-hover: rgba(255, 209, 102, 0.16);
    --task-list: rgba(255, 209, 102, 0.08);
    --btn-secondary: rgba(255, 209, 102, 0.14);
    --sidebar-psuedo: rgba(255, 209, 102, 0.12);
}

body.redvelvet-mode {
    --primary-color: #26070d;
    --secondary-color: #701526;
    --accent-color: #ff526b;
    --accent-light: #ffadb8;
    --accent-alt: #c62845;
    --text-color: #fff3f3;
    --text-secondary: #f6c2c8;
    --text-muted: #de949b;
    --background-color: #26070d;
    --navbar-bg: rgba(38, 7, 13, 0.9);
    --card-bg: rgba(255, 82, 107, 0.12);
    --card-bg-hover: rgba(255, 82, 107, 0.16);
    --border-color: rgba(255, 82, 107, 0.3);
    --shadow-color: rgba(0, 0, 0, 0.28);
    --task-item: rgba(255, 82, 107, 0.08);
    --task-item-hover: rgba(255, 82, 107, 0.16);
    --task-list: rgba(255, 82, 107, 0.08);
    --btn-secondary: rgba(255, 82, 107, 0.14);
    --sidebar-psuedo: rgba(255, 82, 107, 0.12);
}

body,
.desktop-nav,
.mobile-menu,
.card,
.form-container,
.btn,
input,
textarea,
select,
.task-item,
.dashboard-card,
.stat-card,
.feature-card,
.value-card,
.price-card,
.testimonial-card,
.sidebar,
.nav-links a,
.change-theme-btn {
    transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

.change-theme-btn {
    padding: 10px 18px;
    background: rgba(255, 215, 0, 0.15);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    min-height: 44px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

.change-theme-btn:hover,
.change-theme-btn:focus {
    background: var(--accent-color);
    color: var(--primary-color);
    transform: translateY(-1px) scale(1.04);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.18);
    outline: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.9rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: var(--primary-color);
    font-weight: 700;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
    transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.btn:hover,
.btn:focus {
    transform: translateY(-2px);
    box-shadow: 0 18px 28px rgba(0, 0, 0, 0.16);
    filter: brightness(1.03);
    outline: none;
}

input,
textarea,
select {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.9rem 1rem;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-light-muted);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.12);
    background: rgba(255, 255, 255, 0.12);
}